X-8-13=-4

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Solution for X-8-13=-4 equation: 


Simplifying
X + -8 + -13 = -4

Reorder the terms:
-8 + -13 + X = -4

Combine like terms: -8 + -13 = -21
-21 + X = -4

Solving
-21 + X = -4

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + 21 + X = -4 + 21

Combine like terms: -21 + 21 = 0
0 + X = -4 + 21
X = -4 + 21

Combine like terms: -4 + 21 = 17
X = 17

Simplifying
X = 17

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